Abstract: Provided is a transmission power allocation method based on reinforcement learning with an efficient user clustering method. According to an embodiment of the present disclosure, a transmission power allocation method based on user clustering and reinforcement learning of a base station in a non-orthogonal multiple access (NOMA) system includes a sorting step of sorting channel gains of user equipments located in a coverage of the base station in a size order, a clustering step of allocating the user equipment to each cluster based on the size order, and a power allocation step of allocating power to each user equipment included in the cluster by using a quality function based on a state and an action.
Type:
Application
Filed:
November 10, 2021
Publication date:
May 19, 2022
Applicant:
Industry-Academic Cooperation Foundation, Chosun University
Abstract: Disclosed is an apparatus for dynamic resource allocation in cloud radio access networks, and the dynamic resource allocation apparatus includes: a deep reinforcement learning unit learning load fluctuation of a remote radio head by using deep reinforcement learning and predicting the load fluctuation of the remote radio head; a calculation unit calculating a computational resource of a virtual machine corresponding to the remote radio head by using the predicted load fluctuation; and an allocation unit allocating the calculated computational resource to the virtual machine.
Type:
Application
Filed:
September 28, 2021
Publication date:
April 14, 2022
Applicant:
Industry-Academic Cooperation Foundation, Chosun University
Abstract: Disclosed are an apparatus for detecting in-vehicle external data intrusion by comparing multiple information entropy and a method of operating the same. The present invention may prevent a danger due to in-vehicle external data intrusion by providing a technology that may determine whether in-vehicle external data intrusion occurs by checking information entropy representing the amount of information for a package ID generable through an in-vehicle Controller Area Network (CAN) communication network.
Type:
Grant
Filed:
December 20, 2019
Date of Patent:
April 5, 2022
Assignee:
Industry-Academic Cooperation Foundation, Chosun University
Abstract: A processor-implemented encryption method using homomorphic encryption includes: receiving data; generating a ciphertext by encrypting the received data; determining a coefficient of an approximating polynomial for performing a modular reduction on a modulus corresponding to the ciphertext, based on an error between the approximating polynomial and a modular reduction function; and performing bootstrapping on the ciphertext by performing the modular reduction based on the determined coefficient of the approximating polynomial.
Type:
Application
Filed:
August 3, 2021
Publication date:
February 17, 2022
Applicants:
SAMSUNG ELECTRONICS CO., LTD., SNU R&DB FOUNDATION, Industry Academic Cooperation Foundation Chosun University
Inventors:
Hyungchul KANG, Yongwoo LEE, Young-Sik KIM, Jong-Seon NO, Joon-woo LEE
Abstract: The present disclosure relates to a user recognition method and a user recognition apparatus using a two-dimensional (2D) electromyogram (EMG) spectrogram image. The user recognition method using a 2D EMG spectrogram image may include (a) acquiring a one-dimensional EMG signal for a user, (b) converting the acquired one-dimensional EMG signal to a 2D EMG spectrogram image including a temporal feature and a frequency feature, and (c) recognizing the user based on the 2D EMG spectrogram image.
Type:
Application
Filed:
July 22, 2021
Publication date:
January 27, 2022
Applicant:
Industry-Academic Cooperation Foundation, Chosun University
Inventors:
Sung Bum PAN, Jae Myung KIM, Gyu Ho CHOI
Abstract: Provided are an electronic device for sorting homomorphic ciphertext by using shell sorting and an operating method thereof to sort ciphertext generated by using homomorphic encryption according to a size of an original number corresponding thereto.
Type:
Application
Filed:
May 13, 2021
Publication date:
December 2, 2021
Applicants:
Seoul National University R&DB Foundation, Industry-Academic Cooperation Foundation, Chosun University
Inventors:
Jong Seon NO, Young Sik KIM, Joon Woo LEE
Abstract: Disclosed is an electronic device for performing code-based encryption supporting integrity verification of a message and an operating method thereof. When a data transmission side encrypts a message through code-based encryption and transmits the encrypted message to a data reception apparatus, the data transmission side is allowed to use a hash value generated based on a part of the message as an error in code-based encryption to support the data reception apparatus to verify an integrity of a received message by using the hash value.
Type:
Grant
Filed:
November 5, 2019
Date of Patent:
November 23, 2021
Assignees:
DONGGUK UNIVERSITY INDUSTRY-ACADEMIC COOPERATION
FOUNDATION, Industry-Academic Cooperation Foundation, Chosun University
Inventors:
Dae Woon Lim, Young Sik Kim, Ki Soon Yu
Abstract: Disclosed is an encryption method and apparatus. The encryption method using homomorphic encryption may include generating a ciphertext by encrypting data, and bootstrapping the ciphertext by performing a modular reduction based on a selection of one or more target points for a modulus corresponding to the ciphertext.
Abstract: An encryption method and apparatus based on homomorphic encryption using an odd function property. The encryption method includes generating a ciphertext by encrypting data, and bootstrapping the ciphertext by performing a modular reduction based on an odd function property for a modulus corresponding to the ciphertext.
Abstract: Disclosed herein are a probe for a nondestructive testing device using a crossed gradient induced current and a method of manufacturing an induction coil for a nondestructive testing device. The probe for a nondestructive testing device using a crossed gradient induced current includes an induction coil formed to have a predetermined width and to generate first and second induced currents in a direction crossing each other when a current is applied from a power supply, and a magnetic sensor part installed adjacent to the induction coil so as to measure the first and second induced currents induced from the induction coil.
Type:
Grant
Filed:
November 25, 2019
Date of Patent:
November 9, 2021
Assignee:
Industry-Academic Cooperation Foundation, Chosun University
Abstract: An encryption method and apparatus based on homomorphic encryption using a composition of functions. The encryption method includes generating a ciphertext by encrypting data, and bootstrapping the ciphertext by performing a modular reduction based on a composition of a function for a modulus corresponding to the ciphertext.
Type:
Application
Filed:
April 21, 2021
Publication date:
October 28, 2021
Applicants:
SAMSUNG ELECTRONICS CO., LTD., SNU R&DB FOUNDATION, Industry Academic Cooperation Foundation Chosun University
Inventors:
Jong Seon NO, Yong Woo LEE, Eunsang LEE, Joon Woo LEE, Young Sik KIM
Abstract: A method and apparatus for processing a ciphertext based on homomorphic encryption. The method includes determining an approximate polynomial corresponding to a modulus reduction for bootstrapping a ciphertext based on samples extracted from the modulus reduction, and bootstrapping the ciphertext based on the approximate polynomial.
Type:
Application
Filed:
February 10, 2021
Publication date:
October 21, 2021
Applicants:
SAMSUNG ELECTRONICS CO., LTD., SNU R&DB FOUNDATION, Industry Academic Cooperation Foundation Chosun University
Inventors:
Jong Seon NO, Yong Woo LEE, Young Sik KIM, Joon Woo LEE
Abstract: An apparatus for measurement of an electrocardiogram signal using wireless communications includes a submodule measuring a first signal by a heartbeat signal provided via a first electrode when a flag signal is wirelessly received, and a main module wirelessly transmitting the flag signal according to a predetermined sampling period, and measuring a second signal by a heartbeat signal provided through a second electrode. The main module is configured to synchronize a measurement time of the second signal with a measurement time of the first signal by measuring the second signal in consideration of a wireless transmission time of the flag signal.
Type:
Grant
Filed:
October 30, 2018
Date of Patent:
October 5, 2021
Assignee:
Industry-Academic Cooperation Foundation, Chosun University
Inventors:
Youn Tae Kim, Jae Hyo Jung, Ji Hoon Lee, Si Ho Shin
Abstract: Provided is an electronic signature technique depending on a diametrically different algorithm from the existing asymmetric key infrastructure electronic signature technique which generates predetermined syndrome data based on a message to be transmitted a data receiving device and then detects an error vector for an electronic signature from the syndrome data by using a parity check matrix and then generates an electronic signature value based on an error vector for the electronic signature and transmits the generated electronic signature value to the data receiving device.
Type:
Grant
Filed:
November 28, 2019
Date of Patent:
September 21, 2021
Assignees:
Seoul National University R&DB Foundation, Industry-Academic Cooperation Foundation, Chosun University
Inventors:
Jong Seon No, Young Sik Kim, Yong Woo Lee, Wi Jik Lee
Abstract: A loop antenna module used in a capsule-type endoscope comprises: a feed portion substrate including a pair of coupling pads provided on a surface; and a loop antenna body including a loop antenna substrate coupled to the feed portion substrate, a pair of coupling pads provided on a surface of the loop antenna substrate and capacitively coupled to a further pair of coupling pads provided in the feed portion substrate, and a conductive wire extended from the pair of coupling pads provided on the surface of the loop antenna substrate to have a spiral pattern, wherein the loop antenna substrate, the pair of coupling pads and the conductive wire provided in the loop antenna substrate are formed of a transparent material.
Type:
Grant
Filed:
December 20, 2017
Date of Patent:
August 10, 2021
Assignee:
Industry-Academic Cooperation Foundation, Chosun University
Inventors:
Youn Tae Kim, Se Woong Kim, Jong Jin Baek
Abstract: The present disclosure relates to a method of normalizing a tachycardia electrocardiogram (ECG) on the basis of P-wave and T-wave data interpolation. The method of normalizing a tachycardia ECG on the basis of P-wave and T-wave data interpolation includes (a) receiving a first ECG signal from a subject, (b) detecting P-wave and T-wave peaks in the received first ECG signal, (c) segmenting the received first ECG signal into one-cycle ECG signals on the basis of the detected P-wave and T-wave peaks, (d) segmenting the one-cycle ECG signals into a P-wave period, a QRS complex period, and a T-wave period, and (e) normalizing the segmented P-wave and T-wave periods through data interpolation.
Type:
Grant
Filed:
February 10, 2020
Date of Patent:
July 20, 2021
Assignee:
Industry-Academic Cooperation Foundation, Chosun University
Abstract: An apparatus for injecting an infusion solution is provided, and the apparatus includes a housing including a receiving part to receive an infusion solution bag in the receiving part and an infusion solution tube connected with the infusion solution bag and withdrawn, and a pressing member received in the receiving part to self-inflate as air is supplied and to press the infusion solution bag.
Type:
Application
Filed:
December 8, 2020
Publication date:
June 17, 2021
Applicant:
Industry-Academic Cooperation Foundation, Chosun University
Abstract: The present disclosure relates to a method of normalizing a tachycardia electrocardiogram (ECG) on the basis of P-wave and T-wave data interpolation. The method of normalizing a tachycardia ECG on the basis of P-wave and T-wave data interpolation includes (a) receiving a first ECG signal from a subject, (b) detecting P-wave and T-wave peaks in the received first ECG signal, (c) segmenting the received first ECG signal into one-cycle ECG signals on the basis of the detected P-wave and T-wave peaks, (d) segmenting the one-cycle ECG signals into a P-wave period, a QRS complex period, and a T-wave period, and (e) normalizing the segmented P-wave and T-wave periods through data interpolation.
Type:
Application
Filed:
February 10, 2020
Publication date:
June 10, 2021
Applicant:
Industry-Academic Cooperation Foundation, Chosun University
Abstract: A Carbon NanoTube (CNT) composite electrode includes a lower electrode having a through-hole formed therein, and configured to be attached to the skin of a subject body to detect a biosignal, an upper electrode provided on one surface of the lower electrode to form an enclosed space between the lower electrode and the upper electrode, and configured to receive the biosignal detected by the lower electrode, and an air discharge portion formed in at least one of the lower electrode and the upper electrode, and discharging air present in the enclosed space and the through-hole externally so as to be configured to allow the upper electrode and the lower electrode to be attached to the skin of the subject body via vacuum suction.
Type:
Grant
Filed:
December 20, 2017
Date of Patent:
May 4, 2021
Assignee:
Industry-Academic Cooperation Foundation, Chosun University
Inventors:
Youn Tae Kim, Jae Hyo Jung, Ji Hoon Lee, Si Ho Shin
Abstract: Provided is an electromyogram (EMG) signal-based user authentication apparatus and method. The apparatus includes an EMG signal receiver configured to receive an EMG signal measured using an EMG sensor, a pre-processor configured to remove a partial signal from the received EMG signal according to a preset frequency band, and a controller configured to authenticate a user by comparing a pre-stored EMG signal with the EMG signal in which the partial signal has been removed.
Type:
Application
Filed:
May 8, 2020
Publication date:
April 22, 2021
Applicant:
Industry-Academic Cooperation Foundation, Chosun University
Inventors:
Youn Tae KIM, Jae Hyo JUNG, Si Ho SHIN, Min Gu KANG